P0391 — Camshaft Position Sensor "B" Circuit Range/Performance Bank 2
Looking for a known good cam crank waveform, thanks!
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Hans Diagnostician
Utah
Hans Default
I thought for sure I had these in the resources, but I guess not. I'll put them in when I have a second.
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Helpful
Oscar Technician
California
Oscar Default
Thank you! I see that your waveforms are labeled for a BHK engine, which I believe is the 3.6 VR6. We are working with the BKH engine that is the 3.2 V6 with 4 CMP sensors
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Hans Diagnostician
Utah
Hans Default
Ugh I just noticed that!
Looks I might only have a 3.0 AVK, I'll look around on my computers though. I know I don't have that engine code, so I have to see what else is a 3.2.
diag.net/msg/m4pv3lipua…
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David Owner
Kansas
David Default
Thanks for that 3.6 waveform. I was looking for one! LOL
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Hans Diagnostician
Utah
Hans Default
Found at least all the cam signals! It's right about now when I need an 8 channel scope...
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Oscar Technician
California
Oscar Default
I'll take what I can get, thank you very much. Your right, this would be a perfect use case for an 8 channel
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Oscar Technician
California
Oscar Resolution
Just wanted to say thanks again. I compared the waveform on our Audi against what was supplied and you could see that the Bank 2 signals were off. We ended up pulling the motor, removed the timing covers and found the plastic guides on bank 2 tensioner were broken and missing. We refreshed the timing components and all is well again. I'll add the before and after waveforms as well as the…
